I've been reading some of these articles about cyclists having low bone density. My dad and his mother have both dealt with osteoporosis so I worry about it for myself. I realize most of those articles looked at cyclist who put in gobs of miles, but I'm wondering if any of you take any steps to try and avert loosing bone mass. I like that by commuting I can get exercise without going to the gym, but some people say to lift weights to build bone mass.

Do you do anything in this regard?